Variable focus assemblies

US12332444B2 · kind B2 · utility

Assignee

• Magic Leap, Inc. · US

Inventors

• Timothy Mark Dalrymple · Gainesville, US
• David Tinch · Fort Lauderdale, US
• Michael Anthony Klug · Austin, US
• Clinton Carlisle · Palo Alto, US
• Jason Donald Mareno · Raleigh, US
• Arno Leon Konings · Austin, US
• Christopher Peter Couste · Plantation Gardens, US
• Charles Robert Schabacker · Plantation Gardens, US
• Bach Nguyen · Sunrise, US
• Christopher LANING · Windisch, CH
• Roman PATSCHEIDER · Winterthur, CH

Key dates

• Filing date: May 22, 2020
• Grant date: Jun 17, 2025
• Expiry date: Feb 19, 2041

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B2027/0178
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

An example head-mounted display device includes a light projector, an optical assembly arranged to direct light from a light projector to a user, and an actuator module. The optical assembly includes a variable focus lens assembly including a rigid refractive component, a shaper ring defining an aperture, and a flexible lens membrane between the shaper ring and the rigid refractive component and covering the aperture. The refractive component, the shaper ring, and the lens membrane are arranged along an axis. The refractive component and the lens membrane define a chamber containing a volume of fluid. The actuator module is configured to adjust an optical power of the variable focus lens by moving the shaper ring relative to the refractive component along the axis, such that a curvature of the lens membrane in the aperture is modified.